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Use integer coordinates instead of unsigned char. Ignores out-of-bounds coordinates.

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shylie 2024-12-18 19:24:24 -05:00
parent 6663804c88
commit 1a1f4e8b13
4 changed files with 59 additions and 62 deletions
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10
include/glerminal.h
View File

@ -42,7 +42,7 @@ void glerminal_flush();
* @param layer layer of the cell in the range [0, LAYER_COUNT)
* @param sprite sprite's index in the range [0, 4096)
*/
void glerminal_set(unsigned char x, unsigned char y, unsigned char layer, unsigned short sprite);
void glerminal_set(int x, int y, int layer, unsigned short sprite);
/**
* @brief Get a cell's sprite
* @param x position of the cell in the range [0, GRID_WIDTH)
@ -50,7 +50,7 @@ void glerminal_set(unsigned char x, unsigned char y, unsigned char layer, unsign
* @param layer layer of the cell in the range [0, LAYER_COUNT)
* @return sprite index currently assigned to the cell
*/
unsigned short glerminal_get(unsigned char x, unsigned char y, unsigned short layer);
unsigned short glerminal_get(int x, int y, int layer);
/**
* @brief Set a cell's offset
* @param x position of the cell in the range [0, GRID_WIDTH)
@ -59,7 +59,7 @@ unsigned short glerminal_get(unsigned char x, unsigned char y, unsigned short la
* @param x_offset offset of the cell on the x axis in cells
* @param y_offset offset of the cell on the y axis in cells
*/
void glerminal_offset(unsigned char x, unsigned char y, unsigned char layer, float x_offset, float y_offset);
void glerminal_offset(int x, int y, int layer, float x_offset, float y_offset);
/**
* @brief Set a cell's color
@ -68,7 +68,7 @@ void glerminal_offset(unsigned char x, unsigned char y, unsigned char layer, flo
* @param layer layer of the cell in the range [0, LAYER_COUNT)
* @param color The new color
*/
void glerminal_color(unsigned char x, unsigned char y, unsigned char layer, unsigned int color);
void glerminal_color(int x, int y, int layer, unsigned int color);
/**
* @brief Set a cell's scale
* @param x position of the cell in the range [0, GRID_WIDTH)
@ -76,7 +76,7 @@ void glerminal_color(unsigned char x, unsigned char y, unsigned char layer, unsi
* @param layer layer of the cell in the range [0, LAYER_COUNT)
* @param scale The new scale
*/
void glerminal_scale(unsigned char x, unsigned char y, unsigned char layer, float scale);
void glerminal_scale(int x, int y, int layer, float scale);
/**
* @brief Load sprites from a png file

42
source/glerminal-main.cpp
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@ -38,9 +38,9 @@ namespace
int lglerminal_set(lua_State* L)
{
const unsigned char x = luaL_checkinteger(L, 1);
const unsigned char y = luaL_checkinteger(L, 2);
const unsigned char layer = luaL_checkinteger(L, 3) - 1;
const int x = luaL_checkinteger(L, 1);
const int y = luaL_checkinteger(L, 2);
const int layer = luaL_checkinteger(L, 3) - 1;
const unsigned short sprite = luaL_checkinteger(L, 4) - 1;
glerminal_set(x, y, layer, sprite);
@ -49,9 +49,9 @@ namespace
int lglerminal_get(lua_State* L)
{
const unsigned char x = luaL_checkinteger(L, 1);
const unsigned char y = luaL_checkinteger(L, 2);
const unsigned char layer = luaL_checkinteger(L, 3) - 1;
const int x = luaL_checkinteger(L, 1);
const int y = luaL_checkinteger(L, 2);
const int layer = luaL_checkinteger(L, 3) - 1;
lua_pushnumber(L, glerminal_get(x, y, layer) + 1);
return 1;
@ -59,9 +59,9 @@ namespace
int lglerminal_offset(lua_State* L)
{
const unsigned char x = luaL_checkinteger(L, 1);
const unsigned char y = luaL_checkinteger(L, 2);
const unsigned char layer = luaL_checkinteger(L, 3) - 1;
const int x = luaL_checkinteger(L, 1);
const int y = luaL_checkinteger(L, 2);
const int layer = luaL_checkinteger(L, 3) - 1;
const float ox = luaL_checknumber(L, 4);
const float oy = luaL_checknumber(L, 5);
glerminal_offset(x, y, layer, ox, oy);
@ -71,9 +71,9 @@ namespace
int lglerminal_layer_color(lua_State* L)
{
const unsigned char x = luaL_checkinteger(L, 1);
const unsigned char y = luaL_checkinteger(L, 2);
const unsigned char layer = luaL_checkinteger(L, 3) - 1;
const int x = luaL_checkinteger(L, 1);
const int y = luaL_checkinteger(L, 2);
const int layer = luaL_checkinteger(L, 3) - 1;
const float r = luaL_checknumber(L, 4);
const float g = luaL_checknumber(L, 5);
const float b = luaL_checknumber(L, 6);
@ -87,14 +87,14 @@ namespace
if (ri > 255) { ri = 255; }
if (ri < 0) { ri = 0; }
if (gi > 255) { ri = 255; }
if (gi < 0) { ri = 0; }
if (gi > 255) { gi = 255; }
if (gi < 0) { gi = 0; }
if (bi > 255) { ri = 255; }
if (bi < 0) { ri = 0; }
if (bi > 255) { bi = 255; }
if (bi < 0) { bi = 0; }
if (ai > 255) { ri = 255; }
if (ai < 0) { ri = 0; }
if (ai > 255) { ai = 255; }
if (ai < 0) { ai = 0; }
const unsigned int color = ri | (gi << 8) | (bi << 16) | (ai << 24);
@ -105,9 +105,9 @@ namespace
int lglerminal_layer_scale(lua_State* L)
{
const unsigned char x = luaL_checkinteger(L, 1);
const unsigned char y = luaL_checkinteger(L, 2);
const unsigned char layer = luaL_checkinteger(L, 3) - 1;
const int x = luaL_checkinteger(L, 1);
const int y = luaL_checkinteger(L, 2);
const int layer = luaL_checkinteger(L, 3) - 1;
const float scale = luaL_checknumber(L, 4);
glerminal_scale(x, y, layer, scale);

10
source/glerminal-private.h
View File

@ -47,11 +47,11 @@ namespace glerminal
void flush();
void set(unsigned char x, unsigned char y, unsigned char layer, unsigned short sprite);
unsigned short get(unsigned char x, unsigned char y, unsigned char layer) const;
void offset(unsigned char x, unsigned char y, unsigned char layer, float x_offset, float y_offset);
void color(unsigned char x, unsigned char y, unsigned char layer, unsigned int color);
void scale(unsigned char x, unsigned char y, unsigned char layer, float scale);
void set(int x, int y, int layer, unsigned short sprite);
unsigned short get(int x, int y, int layer) const;
void offset(int x, int y, int layer, float x_offset, float y_offset);
void color(int x, int y, int layer, unsigned int color);
void scale(int x,int y, int layer, float scale);
void load_atlas(unsigned char w, unsigned char h, const unsigned int* data);
bool load_sound(const char* name);
void play_sound(const char* name);

59
source/glerminal.cpp
View File

@ -1,6 +1,6 @@
#define STB_IMAGE_IMPLEMENTATION
#define STBI_ONLY_PNG
#define STBI_MAX_DIMENSIONS 512
#define STBI_MAX_DIMENSIONS 2048
#include "glerminal-private.h"
#define GRID_SIZE_UNIFORM_NAME "grid_size"
@ -285,26 +285,21 @@ namespace glerminal
glClear(GL_COLOR_BUFFER_BIT);
glDrawArrays(GL_TRIANGLES, 0, 6);
glBlitNamedFramebuffer(m_screen_framebuffer, 0, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, GL_COLOR_BUFFER_BIT, GL_NEAREST);
glfwSwapInterval(0);
glfwSwapBuffers(m_window);
glBlitNamedFramebuffer(m_screen_framebuffer, 0, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, GL_COLOR_BUFFER_BIT, GL_NEAREST);
glfwSwapInterval(1);
glBlitNamedFramebuffer(m_screen_framebuffer, 0, 0, 0, GRID_WIDTH * CELL_SIZE, GRID_HEIGHT * CELL_SIZE, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, GL_COLOR_BUFFER_BIT, GL_NEAREST);
glfwSwapBuffers(m_window);
}
void glerminal::set(unsigned char x, unsigned char y, unsigned char layer, unsigned short sprite)
void glerminal::set(int x, int y, int layer, unsigned short sprite)
{
if (x < GRID_WIDTH + 2 && y < GRID_HEIGHT + 2 && layer < LAYER_COUNT)
if (x >= 0 && x < GRID_WIDTH + 2 && y >= 0 && y < GRID_HEIGHT + 2 && layer >= 0 && layer < LAYER_COUNT)
{
m_cells[x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2] = sprite;
}
}
unsigned short glerminal::get(unsigned char x, unsigned char y, unsigned char layer) const
unsigned short glerminal::get(int x, int y, int layer) const
{
if (x < GRID_WIDTH + 2 && y < GRID_HEIGHT + 2 && layer < LAYER_COUNT)
if (x >= 0 && x < GRID_WIDTH + 2 && y >= 0 && y < GRID_HEIGHT + 2 && layer >= 0 && layer < LAYER_COUNT)
{
return m_cells[x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2];
}
@ -314,18 +309,18 @@ namespace glerminal
}
}
void glerminal::offset(unsigned char x, unsigned char y, unsigned char layer, float x_offset, float y_offset)
void glerminal::offset(int x, int y, int layer, float x_offset, float y_offset)
{
if (x < GRID_WIDTH + 2 && y < GRID_HEIGHT + 2 && layer < LAYER_COUNT)
if (x >= 0 && x < GRID_WIDTH + 2 && y >= 0 && y < GRID_HEIGHT + 2 && layer >= 0 && layer < LAYER_COUNT)
{
m_offsets[2 * (x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2) + 0] = x_offset;
m_offsets[2 * (x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2) + 1] = y_offset;
}
}
void glerminal::color(unsigned char x, unsigned char y, unsigned char layer, unsigned int color)
void glerminal::color(int x, int y, int layer, unsigned int color)
{
if (x < GRID_WIDTH + 2 && y < GRID_HEIGHT + 2 && layer < LAYER_COUNT)
if (x >= 0 && x < GRID_WIDTH + 2 && y >= 0 && y < GRID_HEIGHT + 2 && layer >= 0 && layer < LAYER_COUNT)
{
m_colors[4 * (x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2) + 0] = (color >> 0) & 0xFF;
m_colors[4 * (x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2) + 1] = (color >> 8) & 0xFF;
@ -334,9 +329,12 @@ namespace glerminal
}
}
void glerminal::scale(unsigned char x, unsigned char y, unsigned char layer, float scale)
void glerminal::scale(int x, int y, int layer, float scale)
{
m_scales[x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2] = scale;
if (x >= 0 && x < GRID_WIDTH + 2 && y >= 0 && y < GRID_HEIGHT + 2 && layer >= 0 && layer < LAYER_COUNT)
{
m_scales[x + y * (GRID_WIDTH + 2) + layer * GRID_AREA_2] = scale;
}
}
void glerminal::load_atlas(unsigned char w, unsigned char h, const unsigned int* data)
@ -505,7 +503,7 @@ namespace glerminal
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glViewport(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
glViewport(0, 0, GRID_WIDTH * CELL_SIZE, GRID_HEIGHT * CELL_SIZE);
// -- setup vertex data --
// create vertex buffer object
@ -735,7 +733,6 @@ namespace glerminal
update_sprites();
glBindTextureUnit(2, m_sprites_texture);
const auto err = glGetError();
// -- setup framebuffer --
glGenFramebuffers(1, &m_framebuffer);
@ -753,7 +750,7 @@ namespace glerminal
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAX_LEVEL, 0);
glTexStorage3D(GL_TEXTURE_2D_ARRAY, 1, GL_RGBA8, SCREEN_WIDTH, SCREEN_HEIGHT, LAYER_COUNT);
glTexStorage3D(GL_TEXTURE_2D_ARRAY, 1, GL_RGBA8, GRID_WIDTH * CELL_SIZE, GRID_HEIGHT * CELL_SIZE, LAYER_COUNT);
glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, m_framebuffer_backing_texture, 0);
glBindTextureUnit(1, m_framebuffer_backing_texture);
@ -774,7 +771,7 @@ namespace glerminal
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGB8, SCREEN_WIDTH, SCREEN_HEIGHT);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGB8, GRID_WIDTH * CELL_SIZE, GRID_HEIGHT * CELL_SIZE);
glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, m_screen_framebuffer_backing_texture, 0);
}
@ -908,39 +905,39 @@ void glerminal_flush()
GLERMINAL_G->flush();
}
void glerminal_set(unsigned char x, unsigned char y, unsigned char layer, unsigned short sprite)
void glerminal_set(int x, int y, int layer, unsigned short sprite)
{
if (!GLERMINAL_G) { return; }
GLERMINAL_G->set(x, y, layer, sprite);
GLERMINAL_G->set(x + 1, y + 1, layer, sprite);
}
unsigned short glerminal_get(unsigned char x, unsigned char y, unsigned short layer)
unsigned short glerminal_get(int x, int y, int layer)
{
if (!GLERMINAL_G) { return 0; }
return GLERMINAL_G->get(x, y, layer);
return GLERMINAL_G->get(x + 1, y + 1, layer);
}
void glerminal_offset(unsigned char x, unsigned char y, unsigned char layer, float x_offset, float y_offset)
void glerminal_offset(int x, int y, int layer, float x_offset, float y_offset)
{
if (!GLERMINAL_G) { return; }
GLERMINAL_G->offset(x, y, layer, x_offset, y_offset);
GLERMINAL_G->offset(x + 1, y + 1, layer, x_offset, y_offset);
}
void glerminal_color(unsigned char x, unsigned char y, unsigned char layer, unsigned int color)
void glerminal_color(int x, int y, int layer, unsigned int color)
{
if (!GLERMINAL_G) { return; }
GLERMINAL_G->color(x, y, layer, color);
GLERMINAL_G->color(x + 1, y + 1, layer, color);
}
void glerminal_scale(unsigned char x, unsigned char y, unsigned char layer, float scale)
void glerminal_scale(int x, int y, int layer, float scale)
{
if (!GLERMINAL_G) { return; }
GLERMINAL_G->scale(x, y, layer, scale);
GLERMINAL_G->scale(x + 1, y + 1, layer, scale);
}
int glerminal_load_sprites_file(const char* filename)